To sift through a large quantity of things to select the best or most valuable; to extract the essence or most important parts from a mass of information or objects.
在浩如烟海的文献资料中，研究者需要披沙简金，才能找到有价值的线索。
Amidst a vast sea of literature and data, researchers need to sift through it meticulously to find valuable clues.
Next Idiom